Site plan requirements by state.

Choose your state before you create a site plan for a shed, deck, patio, pool, fence, garage, ADU, addition, driveway, or other small residential project.

Most permit reviews happen at the city or county level, but the state still shapes the rules around building codes, floodplain programs, professional licensing, and when a simple site plan is no longer enough. These guides help you understand that bigger picture before you spend time drawing.

What these state guides help you avoid

A small permit can still get slowed down by a weak site plan: missing property context, unclear setbacks, no scale, no north arrow, no title block, missing floodplain note, confusing utility callout, or a proposed structure drawn too close to the lot line. The building department may not care how simple the project feels. They care whether the plan gives them enough information to review it.

These state pages are written for homeowners, GCs, small builders, and owner-builders who need to understand what usually matters before they create a site plan. The goal is plain language, not legal language. You should be able to see when a quick permit-style plan may be enough, and when the project needs a licensed surveyor, engineer, architect, or a direct conversation with the local permit office.

Start with the state, then check the property address

Homeowners usually search by city. Contractors often think by job address. Permit data is usually split across the state, county, assessor, GIS office, city planning desk, and building department. SitePlans.ai connects those layers in a practical order: first understand the state context, then check the county and city guidance, then open the creator from the property address.

Where county parcel coverage is already connected, the creator can start with cleaner property lines instead of asking you to trace the lot by eye. Where coverage is not connected yet, the page should make that clear so you are not left wondering whether the tool is broken or the data is simply not available yet.

What a small-permit site plan usually needs

For routine residential projects, reviewers commonly look for the property boundary, existing building footprint, proposed work, dimensions, setbacks, right-of-way or easement context, north arrow, scale, vicinity map, title block, and clear notes. Some projects also need contours, drainage notes, floodplain information, utility locations, driveway access, or impervious area calculations.

That is why SitePlans.ai is built around property context first. A clean site plan is not only a drawing. It is a reviewer-readable sheet that shows where the work sits on the land and why it appears to comply with the basic location requirements.

When a simple site plan is not enough

A web-created site plan should not be treated as a licensed boundary survey or stamped engineering document. If the project involves a boundary dispute, major grading, drainage design, retaining walls, floodplain construction, septic design, commercial engineering, or a jurisdiction that specifically requires a PLS, PE, architect, or sealed plan, follow that requirement. SitePlans.ai is for preliminary and permit-style residential site plans where the local office allows that type of document.

Browse state permit site plan guides

AlabamaResidential site plan guidance for common small permits. AlaskaProperty layout and permit-site-plan notes for homeowners and builders. ArizonaSite plans for sheds, patios, pools, garages, ADUs, and additions. ArkansasPermit-style plan guidance for smaller residential projects. CaliforniaADU, addition, garage, pool, fence, and accessory-structure site plan guidance. ColoradoSite plan guidance for projects where grading, slope, and drainage may matter. ConnecticutResidential permit-site-plan guidance by property and local review context. DelawareSite plan prep guidance for homeowners, GCs, and small builders. FloridaFence, pool, patio, shed, driveway, and addition site plan guidance. GeorgiaResidential site plan help for metro and suburban permit workflows. HawaiiSite plan guidance for property context, local review, and small residential work. IdahoPermit-style site plan guidance for common residential improvements. IllinoisCounty and city site plan guidance for fences, sheds, decks, and additions. IndianaResidential permit plan guidance for homeowners and small contractors. IowaSite plan guidance for smaller residential permits and accessory structures. KansasPractical site plan notes for local residential permit submissions. KentuckyPermit-style site plan guidance for common home improvement projects. LouisianaSite plan guidance where floodplain, drainage, and local review may matter. MaineResidential site plan guidance for local permit and property-context needs. MarylandSite plan guidance for counties, cities, and small residential permit work. MassachusettsPermit-site-plan guidance for additions, sheds, decks, patios, and fences. MichiganResidential site plan guidance for homeowners, GCs, and small builders. MinnesotaSite plan guidance for property layout, setbacks, and smaller permit projects. MississippiPermit-style site plan guidance for common residential work. MissouriSite plan guidance for county and city residential permit workflows. MontanaProperty-context guidance for rural, suburban, and city site plan needs. NebraskaResidential site plan guidance for homeowners and small contractors. NevadaSite plan guidance for small residential projects and local review. New HampshirePermit-style site plan guidance for property improvements. New JerseyResidential site plan guidance where local zoning review can be detailed. New MexicoSite plan guidance for additions, sheds, fences, and property-context drawings. New YorkSite plan guidance for smaller residential permits and local code review. North CarolinaPermit-site-plan guidance for fast-growing residential markets. North DakotaResidential site plan guidance for smaller permit projects. OhioSite plan guidance for decks, sheds, fences, additions, and garages. OklahomaPermit-style site plan guidance for common residential improvements. OregonSite plan guidance for property context, local review, and small permits. PennsylvaniaResidential site plan guidance for local permit and zoning workflows. Rhode IslandSite plan guidance for homeowners and small residential contractors. South CarolinaPermit-site-plan guidance for coastal, suburban, and inland projects. South DakotaResidential site plan guidance for small permit submissions. TennesseeSite plan guidance for sheds, decks, garages, additions, and fences. TexasSite plan guidance for common residential projects, county property-line coverage, and contractor workflows. UtahResidential site plan guidance for fast-growing city and county permit areas. VermontProperty-context site plan guidance for common residential permits. VirginiaResidential site plan guidance for local permit and zoning review. WashingtonSite plan guidance for small permits where drainage and site context can matter. West VirginiaPermit-style site plan guidance for common home improvements. WisconsinResidential site plan guidance for homeowners, contractors, and builders. WyomingProperty-context site plan guidance for smaller residential work.

Questions homeowners and contractors ask

Do state pages replace city permit requirements?

No. State pages explain the bigger context. City and county requirements still control the actual permit review for most residential site plans.

Why does SitePlans.ai also need county pages?

County parcel and assessor data often controls the property-line layer. Cleaner county property lines can make the first draft more useful than tracing a lot by eye.

Can a homeowner use these pages without knowing permit language?

Yes. The pages are written for homeowners, GCs, and small builders who need plain-language guidance before creating a site plan.

When should I order a done-for-you plan instead?

If the city is strict, the parcel is messy, the deadline is close, or you want a drafter-reviewed version, use the SitePlans.us permit-ready option.